In the Narrative view you can configure the fields to display on each card. This allows you to (among other things) select relationship types, such as Character, Location, Dependencies, etc.
However, in relationships, we can configure different types. For example, in my novel file, I have configured relationships from Scenes to Characters for the point of view character, participants in the scene, and background characters. In narrative view at the moment, I can add Character relationships, but that includes all characters. It would be very powerful to be able to optionally select specific types of character relationships — for example, to only show characters related to the scene as either a point of view character or participant.